hg: jdk/client: 2 new changesets

[sergey.bylokhov at oracle.com]

Changeset: caaebecad412
Author:    serb
Date:      2019-12-13 18:37 -0800
URL:       https://hg.openjdk.java.net/jdk/client/rev/caaebecad412

8235638: NPE in LWWindowPeer.getOnscreenGraphics()
Reviewed-by: dmarkov, aivanov

! src/java.desktop/macosx/classes/sun/lwawt/LWWindowPeer.java
+ test/jdk/java/awt/Frame/GetGraphicsStressTest/GetGraphicsStressTest.java

Changeset: a0c94b292e01
Author:    serb
Date:      2019-12-13 18:39 -0800
URL:       https://hg.openjdk.java.net/jdk/client/rev/a0c94b292e01

8235739: Rare NPE at WComponentPeer.getGraphics()
Reviewed-by: dmarkov, aivanov

! src/java.desktop/windows/classes/sun/awt/windows/WComponentPeer.java
! test/jdk/java/awt/Frame/GetGraphicsStressTest/GetGraphicsStressTest.java